1 month's supply (4) of 7-Way, water analysis test strips. These are the same test strips used in the Become-A-PRO course. These strips are specifically designed to correlate with the FREE "Become-A-PRO" software & color chart.
Once you've received your strips, dip one strip per week into the water. Compare the strip to the Color Chart and enter the results into the software for a detailed prescription.